PAGE 44 of 84 HU-SOUTHWEST-1480 GAS-FIRED HUMIDAIRE UNIT
© SAMUEL JACKSON, INCORPORATED 2005 ALL RIGHTS RESERVED
OP MODE SETTINGS
Several modes of operation for the water pump and the controller tuning parameters are
accessed here.
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ENHANCED MODE: This step allows you to choose the water pump mode of
operation. There are two different modes of operation, traditional and enhanced.
Enhanced mode is the factory default setting. A description of these two modes
follow:
ENHANCED OPERATION
Enhanced operation reduces pump cycling and speeds up response
time following a pause in ginning. Control action in the enhanced
mode is as follows. When cotton flow stops, the water pump
continues to run and the water valve (WBV) moves to the closed
position placing the unit in a “standby” state. If cotton flow
resumes within two minutes, the valve position is restored and
humid air returns quickly to the system. If two minutes pass
without cotton, the water pump is turned off until cotton flow is
sensed once again. The internal off-delay timer remains in effect
for the scanner signal in this mode.
TRADITIONAL OPERATION
Traditional operation is identical to the normal operation of older
Humidaire Units. In this mode, the water pump is turned off each
time cotton flow stops. This has the advantage of immediately
stopping all humid air output from the unit (as opposed to a
gradual decrease over a period of 1 to 1-1/2 minutes). It has the
disadvantage of taking several minutes to stabilize the system after
the water pump and control valve action are restarted. Traditional
mode of operation may be needed when operating a Humidaire
Unit on an unforgiving system or in a cold climate.
